I use REW and Rephase to create FIR filters for room correction and use the Convolver plug in with Foobar 2000. The Convolver Plug in has "automatic level control" which I assumed would prevent digital clipping. The other day I ran a 0 dB sweep and was surprised to hear several frequencies with strong digital clipping. I lowered the Convolver plug-in level by an extra 3 dB and it eliminated the obvious audible clipping when sweeping. Then yesterday I was using the Foobar 2000 "downmix to mono" DSP plug-in on some old stereo Jazz recordings and started to hear "digital crackling" and sure enough the "summed mono" DSP was causing digital clipping by adding 3 dB to the signal when summed.
Rather than running 0 dB sweeps and "listening for digital clipping" is there some other way to test for "digital clipping" more objectively and easily without disturbing the household? When creating FIR filters in Rephase and REW is there a way to know what level to create them at to prevent digital clipping and not rely on the Convolver Plug-in? Do I need to make level adjustments every time I add in a DSP plug in like the "sum to mono" plug in? Any ideas on "best practices" appreciated.
I am starting to think digital clipping is more common than you would think when using DSP room corrections. I am also surprised how much DSP eats up gain... I had to add an analog pre-amp to my system when I use DSP room correction in order to have enough voltage to drive my amps to full power.
Rather than running 0 dB sweeps and "listening for digital clipping" is there some other way to test for "digital clipping" more objectively and easily without disturbing the household? When creating FIR filters in Rephase and REW is there a way to know what level to create them at to prevent digital clipping and not rely on the Convolver Plug-in? Do I need to make level adjustments every time I add in a DSP plug in like the "sum to mono" plug in? Any ideas on "best practices" appreciated.
I am starting to think digital clipping is more common than you would think when using DSP room corrections. I am also surprised how much DSP eats up gain... I had to add an analog pre-amp to my system when I use DSP room correction in order to have enough voltage to drive my amps to full power.